CN101616839A - Marine propeller pitch adjustment means - Google Patents
Marine propeller pitch adjustment means Download PDFInfo
- Publication number
- CN101616839A CN101616839A CN200880004537A CN200880004537A CN101616839A CN 101616839 A CN101616839 A CN 101616839A CN 200880004537 A CN200880004537 A CN 200880004537A CN 200880004537 A CN200880004537 A CN 200880004537A CN 101616839 A CN101616839 A CN 101616839A
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- CN
- China
- Prior art keywords
- blade
- marine propeller
- control apparatus
- groove
- lath
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
- B63H1/26—Blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
- B63H1/28—Other means for improving propeller efficiency
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of blade that is used for marine propeller comprises the adjusting lath that is arranged in groove, the trailing edge of the high-pressure side of contiguous this blade of described groove.This is regulated lath and protrudes from the surface of this blade, changes the hydrodynamic characteristics of this blade.This lath can be replaced with other lath with differing heights, to adapt to the particular requirement of hydrodynamic characteristics.
Description
Technical field
The present invention relates to a kind of hydrodynamic characteristics that is used to regulate marine propeller---such as pitch (pitch)---device.
Background technology
The propulsion system that is used for boats and ships is calibrated to usually in narrow parameter to be moved, to realize effective operation.Especially, the hydrodynamic characteristics of marine propeller mates with following factors usually nearly: the speed of related electrical motor and power; The weight of boats and ships, weight distribution and hull resistance; And boats and ships run on environment wherein, such as water temperature.
Many driving engines that use in boats and ships are controlled electronically, just to run on ambient air and the power output of adjusting these driving engines of the temperature of water wherein according to these boats and ships.This can make and be difficult to select screw propeller, thereby because screw propeller is designed so that reaching minimum speed when engine air throttle is opened fully prevents that engine overload from being important.
The rotating speed of screw propeller will change according to the degree of laminar cavitation (sheet cavitation), and this expection has further increased the weight of the complexity of screw propeller design.The amount of cavity significantly changes according to following factor: speed of the ship in meters per second, screw propeller are just working in the density of water wherein and the hydrodynamic characteristics of temperature and hull and axis.Cavity can cause undue oscillation, wearing and tearing and the loss in efficiency of screw propeller.
Though complicated, the hydrodynamic characteristics of screw propeller is enough understood fully, make and to design the screw propeller that mates with the known features of boats and ships and driving engine.Yet, when ship's particulars changes, for example because of add such as fishing stand (fishing tower) new parts or because of with boats and ships when cold water environment is repositioned onto the warm water environment and changes, can have problems.
The known solution of this problem is from replacing screw propeller, and---this may be very expensive way---bends propeller blade and difference to manual.The bending of blade changes the hydrodynamic characteristics of screw propeller in uncontrollable substantially mode, and introduces stress, and described stress can cause the fatigue cracking of blade and final mechanical breakdown.
The present invention is devoted to improve these problems at least in part, and a kind of device that is used for changing with controlled manner the marine propeller hydrodynamic characteristics is provided.
Summary of the invention
According to an aspect of the present invention, provide a kind of blade that is used for marine propeller, this blade comprises coupling part, and this coupling part is arranged to and holds control apparatus, thus, control apparatus and coupling part engage the hydrodynamic characteristics that changes blade.The present invention imagines obtainable control apparatus and selects, and can select specific control apparatus thus from a plurality of control apparatuss, to obtain the hydrodynamic characteristics of expectation.
According to a second aspect of the invention, a kind of control apparatus is provided, it is arranged to the blade of marine propeller and engages, this control apparatus has the bonding part, the coupling part that this bonding part is arranged to by blade holds, thus, control apparatus and blade engages the hydrodynamic characteristics that changes blade.
Preferably, described coupling part comprises the groove in the blade, and described control apparatus comprises the lath that can be accommodated in the described groove, and described lath comprises the part of outside protrusion.Advantageously, described lath can easily be removed and replace.
More preferably, described groove is positioned on the high-pressure side, the trailing edge of blades adjacent (trailingedge).Advantageously, this makes the use of lath can change the effective pitch of screw propeller.What expect is that described lath is as close as possible trailing edge under the prerequisite of or not introducing stress concentration in the blade.Lath can be apart from the about 15mm of trailing edge preferably in trailing edge 50mm.
The width of described lath can be less than 10mm, perhaps about 5mm.This provides enough strip strength under the prerequisite that does not significantly change blade characteristic.
The length of described lath can be about 60% of blade radius.Make lath extend beyond 90% of blade radius, and recessed bending is set, make the part that the hydraulic pressure of this end can be useful increase in the lath end.Lath is begun from about 30% of blade radius, can make the minimization of loss that in lath, flows and cause owing to water.
In an alternate embodiment, described lath can be positioned on the low pressure surface of blade.It is contemplated that this will help prevent cavity.
Description of drawings
Further describing the present invention with reference to accompanying drawing is easily, and accompanying drawing shows the preferred embodiment of propeller adjustment of the present invention.Other embodiment also is possible, and therefore, the particularity of accompanying drawing should not be understood that to replace the generality in preceding description of the present invention.In the accompanying drawing:
Fig. 1 is the block diagram according to marine propeller blade of the present invention;
Fig. 2 is the lateral plan of the propeller blade of Fig. 1;
Fig. 3 is the front elevation of the propeller blade of Fig. 1;
Fig. 4 is the end elevation of the propeller blade of Fig. 1;
Fig. 5 is the cross-sectional plane of the variable reference line A-A that passes through institute's mark among Fig. 4 of the propeller blade of Fig. 1; And
Fig. 6 is the enlarged drawing that is shown in the part of the cross-sectional plane among Fig. 5.
The specific embodiment
With reference to accompanying drawing, show the individual blade 12 of screw propeller 10.Screw propeller 10 has a plurality of such blades 12, and these blades 12 stretch out from hub 14.Usually, a screw propeller 10 can have five or six blades 12, yet, will recognize that the present invention can be applied to have the screw propeller of the blade of any desirable number.
Screw propeller 10 has low pressure or upstream side 16 and high pressure or downstream 18.
Each blade 12 is all similar substantially on shape and structure.Each blade 12 has basic side to the high-pressure side 20 in the downstream 18 of screw propeller 10 and the basic side low pressure surface 22 to the upstream side 16 of screw propeller 10.Each blade 12 has leading edge 24, trailing edge 26 and inner edge 30.The inner edge 30 of each blade 12 is connected to hub 14.Leading edge 24 has formed from inner edge 30 and has extended to screw propeller 10 outermost convex curves.In the embodiment of accompanying drawing, trailing edge 26 has formed the outermost cardinal principle concave curve from inner edge 30 to screw propeller.The curvature of leading edge 24 significantly greater than the curvature of trailing edge 26, therefore defines spherical (bulbous) shape for the face 20,22 of blade.
In being shown in the embodiment of accompanying drawing, each blade 12 stretches out agley from hub 14, sees as best in Fig. 2.Inner edge 30 is relatively along hub 14 orientations, formed blade angle with respect to the longitudinal direction of hub 14.This blade angle is along with the distance of distance propeller boss (boss) and nominal design pitch and change.In its most crooked outside, leading edge 24 forms about 65 ° angle with respect to the longitudinal direction of hub 14.
To recognize that all parameters of aforesaid screw propeller 10 are all set substantially in the casting process of screw propeller.Thus, these parameters can be selected and be designed to be suitable for specific application.
The invention has the advantages that the characteristic that can under the prerequisite that does not change designed shape and structure, change screw propeller.
Each blade 12 is included as the coupling part of the form of groove 32.In a preferred embodiment, as shown in the drawing, groove 32 is positioned at the high-pressure side 20 of blade, contiguous trailing edge 26 but open with trailing edge 26 spaced slightly.In the embodiment of accompanying drawing, this groove extends near trailing edge 26 outermost end the second end 36 near the first ends 34 the inner edge 30.Groove 32 is followed the profile of trailing edge 26 substantially.Especially, groove 32 has recessed bending in its outer end 36, the profile of trailing edge 26 when following trailing edge 26 and converging with leading edge 24.
In preferred embodiment shown in the drawings, first end 34 is positioned at about 0.3 the position that radial distance is a propeller radius.The second end 36 is positioned at about 0.925 the position that radial distance is a propeller radius.
As can bestly in Fig. 6 seeing that low pressure surface 22 is drawn close to the high-pressure side 20 of blade 12 gradually at trailing edge 26 places.Groove 32 just in time is positioned at this bullet, does not exceed the thickness of whole blade.In embodiment shown in the drawings, groove 32 and trailing edge 26 at interval about 15mm, this groove has the thickness of about 5mm simultaneously.
In a preferred embodiment, as shown in the drawing, groove 32 is " dove tail " shapes, sees as best in Fig. 6.This dove tail has the side 37 that becomes about 60 ° of angles with the surface of high-pressure side 20.This groove has the bottom 35 on the surface of high-pressure side of being basically parallel to 20.In embodiment shown in the drawings, groove 32 has the degree of depth of about 3.4mm, and this degree of depth is approximately half of blade thickness.
Groove 32 is arranged to and holds control apparatus, and this control apparatus is for protruding the form of lath 40.The cross-sectional plane of a suitable protrusion lath 40 can be seen in Fig. 6.
It is elongated protruding lath 40, and has substantially invariable shape of cross section.This protrusion lath comprises bonding part 42 and outside projection 44.
Bonding part 42 and groove 32 shape complementarities.In the embodiment of accompanying drawing, this bonding part is " dove tail " structure, but will recognize, also can use other structures.
Protruding lath 40 can be made by the material of any appropriate.Possible material comprises nylon and polyurethane.
Protruding lath 40 can engage with groove 32 by slide joint.Lath 40 is introduced into groove 32 by introducing zone 38.
Protruding the effect that lath 40 joins in the groove 32 is, changes the hydrodynamic characteristics of blade 12, and thereby changes the hydrodynamic characteristics of screw propeller 10.Especially, lath 40 joins the effect that has the effective pitch that increases screw propeller 10 in each blade 12 to.26 to flow through screw propeller in the base layer stream mode different from leading edge 24 to trailing edge with water, flow to change upper edge 46 from leading edge 24 to outside projection 44 into.This has reduced the angle of current with respect to the longitudinal direction of hub 14, has effectively increased the pitch of screw propeller 10.
To recognize that the degree that changes effective pitch is directly relevant with the height of outside projection 44.
Test shows that effective pitch changes by following two kinds of mechanism: because of the angle between leading edge 24 and the upper edge 46 changes pitch, as mentioned above; And pressure is concentrated along the driving surface (leading face) of outside projection 44, thereby cause fluid flow direction to change.To being similar to the test shows of mentioned above and screw propeller shown in the drawings, back one effect can change (P by the pitch that causes owing to deflection
D)---it is projection height (H
T) linear function---describe.The pass that records in the test that the applicant carries out is P
D(mm)=45+25.4 (H
T-1).This relation meets the H that has between 0.5mm and the 4mm
TThe result of projection.
To recognize that this relation shows, comprises little projection and still can make pitch change 20mm at least.
Total variation of effective pitch equals angle increases caused pitch (P
I) and the pitch that causes owing to deflection change (P
D) stack.Therefore, the effective pitch (P that locates of radius r (mm)
E(r) (mm)) be defined as P
E(r)=P
D+ tan (α
P+ α
1) .2 π r, wherein α
PBe the helical angle of the screw propeller of band plate bar 40 not, α
1It is the variation of helical angle.Total variation of the effective pitch on the blade can be by the acquisition of averaging in radius.
Be appreciated that the length of groove 32 and the position of end 34 and 36 thereof, the hydrodynamic characteristics that appreciable impact is caused by using lath 40 changes.Consider to make the second end 36 places of groove 32 to have the deflection function that crooked meeting increase is caused by hydraulic pressure.Also consider to make the lifting (lift) that produces by blade-section less, so the position of the first end 34 of groove may be so unimportant near hub 14.
In use, can predict a screw propeller 10 and will be provided with many group protrusion laths 40, the height of the projection 44 of each group is different.Like this, can select effective pitch according to the condition that screw propeller 10 will run on wherein.
The program of structure screw propeller is from considering the mean pitch of expectation.When this determines, can use aforesaid equation to design such screw propeller: its nominal pitch is less than the mean pitch of expectation, but has for example lath of the projection of 1.5mm, the mean pitch that it can obtain to expect by use.
After the casting of screw propeller 10, can then in each propeller blade 14, process suitable groove 32.After finishing manufacturing procedure, initial lath 40 (height that has 1.5mm in this example) can be inserted in the groove 32.
Though invention has been described about changing pitch, will recognize that the suitable placement of groove 32 can make the present invention can be used to change other hydrodynamic characteristics of blade 12.For example, the present invention might be applied on the low pressure surface 22, to reduce or to control the generation of cavity.
The modifications and variations that it will be apparent to those skilled in the art are considered as within the scope of the invention.For example, extend, will recognize, in some applications, may wish that projection 44 forms acute angle or obtuse angle with respect to it from the face of its extension though projection 44 is described to be basically perpendicular to high-pressure side 20.
Claims (23)
1. blade that is used for marine propeller, this blade comprises coupling part, this coupling part is arranged to and holds control apparatus, thus the hydrodynamic characteristics that changes blade that engages of control apparatus and coupling part.
2. the blade that is used for marine propeller as claimed in claim 1, wherein, described coupling part be arranged to hold control apparatus select in one of at least, each in the described selection is to change the hydrodynamic characteristics of blade in various degree.
3. the blade that is used for marine propeller as claimed in claim 1 or 2, wherein, described coupling part comprises the groove in the blade.
4. the blade that is used for marine propeller as claimed in claim 3, wherein, described control apparatus comprises lath, described lath has the bonding part that can be accommodated in the described groove and in use from a projection that extend on the surface of blade.
5. the blade that is used for marine propeller as claimed in claim 4, wherein, described projection has the width less than 10mm.
6. the blade that is used for marine propeller as claimed in claim 5, wherein, described projection has the width of about 5mm.
7. as arbitrary described blade that is used for marine propeller in the claim 4 to 6, wherein, described bonding part and described groove shape complementation.
8. the blade that is used for marine propeller as claimed in claim 7, wherein, the shape of cross section of described groove is a dove tail shape.
9. as arbitrary described blade that is used for marine propeller in the claim 3 to 8, wherein, described groove is positioned on the high-pressure side of described blade.
10. the blade that is used for marine propeller as claimed in claim 9, wherein, the contiguous described vane trailing edge of described groove location.
11. the blade that is used for marine propeller as claimed in claim 10, wherein, described groove extends to 90% place that surpasses of blade radius from about 30% of blade radius.
12. as claim 10 or the 11 described blades that are used for marine propeller, wherein, described groove and described trailing edge are at interval less than 50mm.
13. the blade that is used for marine propeller as claimed in claim 12, wherein, described groove and described trailing edge are at interval less than 25mm.
14. the blade that is used for marine propeller as claimed in claim 13, wherein, the about at interval 15mm of described groove and described trailing edge.
15. as arbitrary described blade that is used for marine propeller in the claim 10 to 14, wherein, described groove is followed the profile of described trailing edge substantially.
16. the blade that is used for marine propeller as claimed in claim 15, wherein, described groove has recessed bending in its outer end.
17. as arbitrary described blade that is used for marine propeller in the claim 3 to 8, wherein, described groove is positioned on the low pressure surface of described blade.
18. as arbitrary described blade that is used for marine propeller in the claim 3 to 17, wherein, described groove comprises introduces the zone, the remainder of described groove is wider than in this introducing zone.
19. marine propeller with the described blade of a plurality of arbitrary as described above claims.
20. control apparatus, it is arranged to the blade of marine propeller and engages, described control apparatus has the bonding part, and the coupling part that this bonding part is arranged to by blade holds, described thus control apparatus and blade engage the hydrodynamic characteristics that changes blade.
21. control apparatus as claimed in claim 20, wherein, described control apparatus comprises lath, and this lath has bonding part and outside projection.
22. control apparatus as claimed in claim 21, wherein, described outside projection is basically perpendicular to a surface of blade, and described outside projection protrudes from this surface.
23. a definite control apparatus is to the method for the influence of the hydrodynamic characteristics of marine propeller blade, the method comprising the steps of: the effective pitch that the effective pitch that calculating is caused by the angle of current increase changes and causes owing to the deflection that is caused by current changes, and with these two effect stacks.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2007900622A AU2007900622A0 (en) | 2007-02-08 | Pitch adjustment means marine propeller | |
| AU2007900622 | 2007-02-08 | ||
| PCT/AU2008/000162 WO2008095259A1 (en) | 2007-02-08 | 2008-02-08 | Marine propeller pitch adjustment means |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101616839A true CN101616839A (en) | 2009-12-30 |
| CN101616839B CN101616839B (en) | 2013-03-13 |
Family
ID=39681197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008800045378A Active CN101616839B (en) | 2007-02-08 | 2008-02-08 | Marine propeller pitch adjustment means |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8517683B2 (en) |
| EP (1) | EP2117921B1 (en) |
| CN (1) | CN101616839B (en) |
| AU (1) | AU2008213740B2 (en) |
| ES (1) | ES2588232T3 (en) |
| WO (1) | WO2008095259A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107076185A (en) * | 2014-08-05 | 2017-08-18 | 瑞安·丘奇 | fluid redirection structure |
| CN107618644A (en) * | 2017-08-22 | 2018-01-23 | 哈尔滨工程大学 | A kind of deformable propeller |
| CN108791787A (en) * | 2017-09-20 | 2018-11-13 | 航天晨光（福建）管业科技有限公司 | A kind of adjustable type propeller protective device |
| US11035340B2 (en) | 2014-08-05 | 2021-06-15 | Biomerenewables Inc. | Fluidic turbine structure |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8696318B2 (en) * | 2010-03-05 | 2014-04-15 | Twin Disc, Inc. | Stepped surface propeller |
| US20150217846A1 (en) * | 2012-07-31 | 2015-08-06 | Russel Ian Hawkins | Propeller Including a Blade Back Flow Guide |
| CA2992865C (en) | 2014-08-05 | 2021-01-19 | Ryan Church | Structure with rigid projections adapted to traverse a fluid environment |
| WO2016019467A1 (en) | 2014-08-05 | 2016-02-11 | Ryan Church | Structure with rigid winglet adapted to traverse a fluid environment |
| CN109153956B (en) | 2015-09-04 | 2022-10-28 | 新泽西州立拉特格斯大学 | High throughput feedback controlled electroporation microdevice for efficient delivery of molecules into single cells |
| US10882593B1 (en) * | 2019-12-10 | 2021-01-05 | Gary Alan Ledford | Peller blade with a flap |
| JP2023113037A (en) * | 2022-02-02 | 2023-08-15 | ヤマハ発動機株式会社 | Control system and control method for vessel |
| USD1069047S1 (en) | 2023-05-31 | 2025-04-01 | Turtle Pump Company | Flow straightener |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1446011A (en) * | 1921-07-05 | 1923-02-20 | Jackson Robert Cattley | Propeller |
| US2099229A (en) * | 1936-01-15 | 1937-11-16 | Possenheim Louis | Fin equipped rudder |
| GB496700A (en) | 1937-08-19 | 1938-12-05 | Edgar Allan Wawn | Improvements relating to screw and like propellers |
| US2498170A (en) * | 1946-06-04 | 1950-02-21 | Meier Gustav | Propeller blades |
| US2978040A (en) * | 1958-02-04 | 1961-04-04 | Oscar A Wirkkala | Marine propeller |
| US2990889A (en) * | 1959-10-19 | 1961-07-04 | Merrell V Welch | Propeller blade sock |
| US3812812A (en) * | 1973-06-25 | 1974-05-28 | M Hurwitz | Trolling propeller with self adjusting hydrodynamic spoilers |
| US4047835A (en) * | 1976-08-02 | 1977-09-13 | Arthur Charles Hornung | High efficiency propeller |
| US5180286A (en) * | 1990-09-25 | 1993-01-19 | Dean Peter E | Propeller assembly |
| DE19647102A1 (en) | 1996-11-14 | 1998-05-20 | Philippe Arribi | Flow body |
| US5791874A (en) * | 1997-01-23 | 1998-08-11 | Brunswick Corporation | Marine propeller with adjustable cupping |
| AUPP341698A0 (en) * | 1998-05-06 | 1998-06-04 | Elms Australia Pty Ltd | Improved hydrofoil device |
| CN2467401Y (en) * | 2001-02-21 | 2001-12-26 | 辛文 | Efficient bionic impeller or propeller |
| SE0301873L (en) * | 2003-06-26 | 2004-04-13 | Ragnar Winberg | Device for ship propellers |
| US7040940B2 (en) * | 2004-04-20 | 2006-05-09 | Ab Volvo | Rotatable lifting surface device having selected pitch distribution and camber profile |
| CN1644879A (en) * | 2005-01-18 | 2005-07-27 | 乐金湘 | Rotary blades |
-
2008
- 2008-02-08 CN CN2008800045378A patent/CN101616839B/en active Active
- 2008-02-08 AU AU2008213740A patent/AU2008213740B2/en active Active
- 2008-02-08 US US12/526,176 patent/US8517683B2/en active Active
- 2008-02-08 WO PCT/AU2008/000162 patent/WO2008095259A1/en active Application Filing
- 2008-02-08 EP EP08700449.5A patent/EP2117921B1/en active Active
- 2008-02-08 ES ES08700449.5T patent/ES2588232T3/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107076185A (en) * | 2014-08-05 | 2017-08-18 | 瑞安·丘奇 | fluid redirection structure |
| US10578076B2 (en) | 2014-08-05 | 2020-03-03 | Ryan Church | Fluid-redirecting structure |
| CN107076185B (en) * | 2014-08-05 | 2020-06-16 | 瑞安·丘奇 | Fluid redirecting structure |
| US11035340B2 (en) | 2014-08-05 | 2021-06-15 | Biomerenewables Inc. | Fluidic turbine structure |
| US12078145B2 (en) | 2014-08-05 | 2024-09-03 | Biomerenewables Inc. | Fluidic turbine structure |
| CN107618644A (en) * | 2017-08-22 | 2018-01-23 | 哈尔滨工程大学 | A kind of deformable propeller |
| CN108791787A (en) * | 2017-09-20 | 2018-11-13 | 航天晨光（福建）管业科技有限公司 | A kind of adjustable type propeller protective device |
| CN108791787B (en) * | 2017-09-20 | 2019-08-13 | 航天晨光（福建）管业科技有限公司 | A kind of adjustable type propeller protective device |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2117921B1 (en) | 2016-07-06 |
| US20100008780A1 (en) | 2010-01-14 |
| AU2008213740A1 (en) | 2008-08-14 |
| CN101616839B (en) | 2013-03-13 |
| EP2117921A4 (en) | 2013-07-24 |
| WO2008095259A1 (en) | 2008-08-14 |
| ES2588232T3 (en) | 2016-10-31 |
| US8517683B2 (en) | 2013-08-27 |
| EP2117921A1 (en) | 2009-11-18 |
| AU2008213740B2 (en) | 2013-02-07 |
| WO2008095259A9 (en) | 2015-05-28 |
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